Chemistry Unit Review Crossword

Edit Answers
123456789101112131415161718192021222324
Across
  1. 1. When atoms of different elements combine they form this
  2. 3. Each numbered column on the Periodic table
  3. 5. Number at the top of each element in the Periodic table
  4. 8. Must be the same number of atoms of both sides of a chemical reaction
  5. 11. This is at the center of an atom
  6. 15. How electrons move around their shell
  7. 16. mass Number at the bottom of each element in the Periodic table
  8. 17. Chemical reaction that releases heat
  9. 19. Chemical reaction that absorbs heat
  10. 20. Combination of elements on the right side of a chemical equation
  11. 22. A substance made up of one type of atom
  12. 23. Brittle, not malleable or ductile, insulators
  13. 24. Carry a neutral charge
Down
  1. 2. Russian chemist and inventor, formulated Periodic Law
  2. 4. Carry a positive charge
  3. 6. Revolve around the outer shell of an atom
  4. 7. Each horizontal row on the Periodic table
  5. 9. Gaseous elements in Group 18 of the Periodic table
  6. 10. Letter or pair of letters at the center of each element on the Periodic table
  7. 12. Combination of elements
  8. 13. Carry a negative charge
  9. 14. When atoms of the same element combine they form this
  10. 18. Shares characteristics of nonmetals and metals
  11. 21. Shiny in appearance, malleable, ductile, conducts electricity